The Perimeter Formula

The formula for perimeter of a square is given as:

P = 4s

Where P is the perimeter and s is the side length.

Perimeter of a Square Example Problems

Let's go through a couple of example problems together to practice finding the perimeter of a square.

Example Problem 1

A square has a side length of 5. What is the perimeter?

Solution:

1. P = 4s
2. P = 4(5) = 20
3. The perimeter of the square is 20.

Example Problem 2

A square has an area of 36. What is the perimeter?

Solution:

1. The area formula is A = s², we can find side length by solving for s.
2. 36 = s²
3. √36 = s
4. s = 6
5. We have found the side length is 6. Plugging this into the perimeter formula we get:
6. P = 4s
7. P = 4(6) = 24
8. The perimeter of the square is 24.

Example Problem 3

A square table is measured to have a perimeter of 2 meters. What is the length of one of its sides?

Solution:

1. Let's plug the perimeter into the formula and solve for s.
2. P = 4s
3. 2 = 4s
4. 2/4 = s
5. s = 0.5
6. The side length of the table is 0.5 meters.